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Processes
Special Issues
Biofuels Production Processes
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Biofuels Production Processes

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Environmental and Green Processes".

Deadline for manuscript submissions: 20 March 2026 | Viewed by 519

Special Issue Editor

Dr. Omotola Babajide

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Cape Peninsula University of Technology, Cape Town 7535, South Africa
Interests: sustainable and renewable energy; biofuels and biodiesel studies; waste remediation

Special Issue Information

Dear Colleagues,

The Special Issue, entitled "Biofuels Production Processes", explores innovative, sustainable, and scalable approaches to the production of biofuels, with a strong emphasis on Environmental, Social, and Governance (ESG) considerations. As the world transitions toward a low-carbon future, biofuels represent a critical solution in reducing dependence on fossil fuels and lowering greenhouse gas emissions.

This Special Issue invites high-quality research, reviews, and case studies that advance the science and engineering of biofuel production—including biochemical, thermochemical, and hybrid conversion technologies—as well as process optimization, feedstock sustainability, and life cycle assessments. Contributions that explicitly address the ESG dimensions of biofuel development—such as environmental impact assessments, social acceptance, responsible sourcing, and regulatory frameworks—are particularly encouraged.

We aim to foster a multidisciplinary dialogue that connects technological innovation with ethical and sustainable practices, ultimately supporting a more resilient and inclusive energy future.

Dr. Omotola Babajide
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • biofuel production
  • biomass conversion
  • pyrolysis and biochar
  • ESG in bioenergy
  • sustainable energy
  • process optimization
  • life cycle assessment
  • responsible sourcing
  • waste-to-energy
  • environmental impact
  • energy policy and governance

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Published Papers (1 paper)

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Research

17 pages, 3460 KB  
Article
Sustainable Bioethylene Production from Lignocellulosic Bioethanol: Performance of Zeolitic Catalysts and Mechanistic Insights
by Carolina Mónica Mendieta, María Fernanda Zalazar, Laura Gabriela Covinich, Gerardo Fabián Santori, Fernando Esteban Felissia and María Cristina Area
Processes 2025, 13(9), 2924; https://doi.org/10.3390/pr13092924 - 13 Sep 2025
Viewed by 410
Abstract
Producing second-generation (2G) bioethylene through the dehydration of 2G bioethanol is a challenge, requiring the effective use of catalysts as an alternative to fossil-based ethylene production. This work evaluates the production of bioethylene from the catalytic dehydration of 2G bioethanol [from pine sawdust [...] Read more.
Producing second-generation (2G) bioethylene through the dehydration of 2G bioethanol is a challenge, requiring the effective use of catalysts as an alternative to fossil-based ethylene production. This work evaluates the production of bioethylene from the catalytic dehydration of 2G bioethanol [from pine sawdust produced via a simultaneous saccharification and fermentation SSF process (53%)] using γ-Al2O3; ZSM-5, NH4+Y, H-ZSM-5, and H-Y zeolite as catalysts. Yields of 94.6% (at 372 °C) and 85.5% (at 473 °C) of 2G bioethylene were obtained when using H-ZSM-5 and H-Y zeolite, respectively. These results demonstrate that the H-ZSM-5 zeolite showed the best performance for 2G bioethanol dehydration, producing high 2G bioethanol conversion and 2G bioethylene selectivity at a lower reaction temperature. Ethylene production from the catalytic dehydration of commercial (96%) and diluted (53%) ethanol was evaluated as a reference, along with the effects of the weight hourly space velocity (WHSV) and ethanol concentration. Varying the WHSV from 2.37 to 4.73 h−1 at 312 °C and using commercial ethanol at 96%, produced similar ethanol conversion of 100% and ethylene yield of 100%. At 290 °C, with a WHSV of 2.37 h−1 and 53% diluted commercial ethanol, H-ZSM-5 converted 76.83% of the ethanol and produced a 75.8% ethylene yield. A study based on density functional theory (DFT) has shown that diethyl ether is a key intermediate in the conversion mechanism on H-ZSM-5, proceeding through an ethoxide intermediate in the rate-determining step, with an apparent activation energy of 25.4 kcal mol−1. Full article
(This article belongs to the Special Issue Biofuels Production Processes)
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